Species Details

Agrilus anxius

University of Alberta E.H. Strickland Entomological Museum Read more about this collection »

Common NameBronze Birch Borer SeasonalityJune, July and August. IdentificationThis species along with A. liragus are virtually identical in external appearance. The pronotum and top of the head often have brassy to coppery reflections. On beetles of liragus, there may be two pale pub sent spots on the elytra. Characters of the male genital apparatus will separate the species. The easiest diagnostic character if available is host association. These beetles are found on birch.

Scientific Name Agrilus anxius Common Name Bronze Birch Borer Habitat Birch groves. Seasonality June, July and August. Identification
This species along with A. liragus are virtually identical in external appearance. The pronotum and top of the head often have brassy to coppery reflections. On beetles of liragus, there may be two pale pub sent…
This species along with A. liragus are virtually identical in external appearance. The pronotum and top of the head often have brassy to coppery reflections. On beetles of liragus, there may be two pale pub sent spots on the elytra. Characters of the male genital apparatus will separate the species. The easiest diagnostic character if available is host association. These beetles are found on birch.
Life History
The adults first start to emerge in late June and live about 3 weeks. Females oviposit on damaged or weakened trees, in crevices in the bark. Preference is given to exposed, open growing trees, often drought…
The adults first start to emerge in late June and live about 3 weeks. Females oviposit on damaged or weakened trees, in crevices in the bark. Preference is given to exposed, open growing trees, often drought stressed. Eggs are deposited on branches or on the trunk, (usually larger than 25 mm in diameter). Larvae bore into the cambial area. If the tree is healthy it may overgrow the damage, if not the larval tunnelling may kill the branch. The larvae feed under the bark, entering the wood to moult. Pupation occurs in the wood just beneath the bark. Adult exit holes are "D" shaped (Ives and Wong, 1988).
Conservation Common; serious pest of ornamental plantings of birch in our area (Baker 1972). Diet Info Restricted to birch trees, including paper birch, weeping birch and water birch. Range North America, anywhere birch grows (Baker 1972).
Agrilus anxius
Agrilus anxius
Agrilus anxius

Citation

Page Citation for Agrilus anxius

Page Citation

"Species Details - Agrilus anxius, University of Alberta E.H. Strickland Entomological Museum." University of Alberta Museums Search Site, https://search.museums.ualberta.ca/g/2-3229. Accessed 19 Apr. 2024.

Authorship

Name Hilchie, Gerald J.
Role species page author
Date 2003

References

Specimen Information

There are 12 specimens of this Species.

12 results plotted on map in 4 markers.
Note: Only records with latitude and longitude coordinates are plotted on map.

UASM23188 - Agrilus anxius

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, George Lake Collected ByHilchie, Gerald J. Date Collected1998-02-02/1998-02-12

UASM23189 - Agrilus anxius

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, George Lake Collected ByHilchie, Gerald J. Date Collected1998-02-13/1998-02-19

UASM23422 - Agrilus anxius

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Fawcett Collected ByStrickland, Edgar H. Date Collected1936-06-10

UASM23423 - Agrilus anxius

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Fawcett Collected ByStrickland, Edgar H. Date Collected1932-06-20

UASM23424 - Agrilus anxius

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Redwater Date Collected1927-06-19

UASM23425 - Agrilus anxius

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Redwater Date Collected1927-06-19

UASM23426 - Agrilus anxius

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Redwater Date Collected1927-06-27

UASM23427 - Agrilus anxius

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Redwater Date Collected1927-06-27

UASM23429 - Agrilus anxius

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Seebe Collected ByCarr, B. F.; Carr, J. L. Date Collected1972-07-30

UASM23430 - Agrilus anxius

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Seebe Collected ByCarr, B. F.; Carr, J. L. Date Collected1972-07-30

UASM23431 - Agrilus anxius

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Seebe Collected ByCarr, B. F.; Carr, J. L. Date Collected1972-07-30

UASM23432 - Agrilus anxius

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Seebe Collected ByCarr, B. F.; Carr, J. L. Date Collected1972-07-30

Adult Seasonal Distribution